CTC Union TCT301 Series User manual
TCT301 Series Termination BoxTCT301 Series Termination Box
1 Triaxial Sensor Input1 Triaxial Sensor Input
Product ManualProduct Manual
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• Introduction...................................................................3
• Product Description...........................................................3
• Product Dimensions...........................................................4
• Mounting Instructions .........................................................5
• Conduit Entry .................................................................6
• Grounding ....................................................................7
• Sensor Installation ............................................................9
• Post Installation Testing ..................................................... 12
• Maintenance ................................................................ 13
• Warranty and Refund Information............................................ 14
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CTC termination box solutions allow for the monitoring of remotely-mounted
vibration sensors, which would otherwise be restricted to human access due to
safety considerations.
TCT301 Series Termination Box Overview: One triaxial sensor input (three
measurement channels), polycarbonate enclosure
The TCT301 Termination Boxes are a common cable termination point for
bringing compatible cables for triaxial sensors into a termination box for routine
data collection with portable data collectors. A cover featuring four self-tapping
screws allows the box to be sealed from the elements.
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Data Collector
Access (BNC)
Figure 1. Dimensions
Figure 2. Diagram
Side View Rear View
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M I
Molded mounting brackets are included on the enclosure. Wall anchoring screws
are not included.
Mounting
Holes
0.22 in./5.59 mm
Figure 3. Cable Termination Box Rear View
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If you have purchased an enclosure without cable entries provided, you should add
your own entry prior to mounting the termination box. CTC does not recommend
putting holes in the top of the enclosure as it will cause restricted access to the
wire termination connection points and also allow possible moisture ingress.
Note: To prevent a buildup of condensation inside the enclosure, provide drainage
by drilling a hole in the lowest point of the conduit.
Correct
Figure 4. Conduit Entry for Termination Box
Incorrect
Drill Drain
Hole Here
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G
Optional grounding is available on the TCT301 Series. Select the “with ground
lug” option (TCT301G) when ordering if external grounding is desired.
A. Mounting to Earth Ground
When mounting TCT301G Series Termination Boxes to earth ground (such as an
I-Beam), mount the shield ground wire using a mounting bolt through one of the
mounting brackets on the enclosure. See Figure 5 below.
Figure 5. Cable Termination Box Earth Ground
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B. Mounting to Non-Grounded Structure
When mounting the TCT301G to a non-grounded structure, ensure the shield
ground wire or customer-supplied ground wire is tied to a source of earth ground.
Figure 6. Ground Wire Placement
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Installation of Sensors/Signal Input Cable
1. Feed blunt-cut end through the cable entry at the bottom of the enclosure.
Note: It is recommended that cables are marked on both ends.
For cord grip cable entry, take off the cord grip cover with bushing and run cable
through it then into the enclosure, hand-tighten cord grip cover to base to prevent
damage of cord grip.
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1. Strip outer jacket of cable back 1¼ in. and remove all of the shielding.
2. Separate the internal wires from the shield.
3. Strip red and black insulation back ¼ in.
Figure 8. Bottom View with
Cord Grips Installed
Figure 7. Front View
Figure 9. Stripped Wire
4. While viewing the rear of the panel, locate the appropriate channel. Using a mini
flathead screwriver, loosen the three screws for the channel and insert the wires
into the termination block. Orientation is as follows:
a. Green insulated conductor wire (X) is connected to the rst channel used.
b. Red insulated conductor wire (Y) is connected to the second channel.
c. White insulated conductor wire (Z) is connected to the third channel used.
d. Black insulated conductor wire is connected to (-) and must be applied to
each channel.
e. Shielddrainwireisconnectedtoground(GND)andneedsonlyonetermination.
Tighten the screw on each wire to hold it in place.
(-) Common
Shield / Drain Wire
(+) Channel Y
(+) Channel X
(+) Channel Z
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Figure 10. Field Wiring for Four-Conductor Triaxial Sensor Inputs
E
NSIONS
E
SHEET
Sensor Inputs
Green = Positive X Axis
Red = Positive Y Axis
White = Positive Z Axis
Black = Common
Grey = Shield (Ground)
SENSOR #1
Inputs
E
NSIONS
E
SHEET
Sensor Inputs
Green = Positive X Axis
Red = Positive Y Axis
White = Positive Z Axis
Black = Common
Grey = Shield (Ground)
SENSOR #1
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The TM1018 Accelerometer Verification Meter can be used to verify cable
conductivity, sensor location and proper wiring connections. The Verification
Meter will indicate if the sensor, cable and/or junction box is in working condition.
It will also confirm bias voltage of the accelerometer, which will inform you of the
operation of the internal accelerometer amplifier.
Testing Method:
1. Utilizing two personnel, Person A will be located at the termination box, while
Person B will be located at the measurement location.
2. Once positioned, Person A will connect the TM1018 to the data collector
output to the termination box and turn the Channel Selector to the channel
that corresponds to the referenced measurement. Person A should observe a
“NORMAL” LED reading.
3. Person B disconnects the cable from the accelerometer, and the TM1018 should
respond with an “OPEN” LED. Reconnect the cable to the accelerometer, and
the TM1018 should respond with a “NORMAL” LED.
4. Repeat for each measurement location to verify that accelerometer location is
properly identified at the termination box.
Figure 12. TM1018 Accelerometer Verication Meter
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The following LED Readout indicates the circuit integrity:
1. Green LED: Normal. Indicates proper connection and an output bias will be given,
indicating the health of the sensor (4 – 16 V indicates a healthy accelerometer).
2. Yellow LED: Open Circuit. Indicates one of the following:
a. Cable connector is not connected to accelerometer.
b. Cable is open circuit (broken or not connected at one end).
c. Accelerometer is not functioning correctly.
3. Red LED: Short Circuit. Indicates one of the following:
a. Water or contamination in the connector.
b. Reverse wiring ((+) and (-) leads are reversed) at terminal block inputs of the
termination box.
c. Wires in termination box or cable connector (+) & (-) are touching.
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Once the system has been installed, it requires minimal maintenance. Basic
checks to ensure system integrity should be made periodically.
Visual inspection should include examinations for the following:
1. No Visible electrical burns or smoke inside the enclosure.
2. Enclosure hinges are free from rust and securely latched.
3. No moisture or condensation is present inside the enclosure.
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Warranty
All CTC products are backed by our unconditional lifetime warranty. If any CTC
product should ever fail, we will repair or replace it at no charge.
Refund
All stock products can be returned for a 25% restocking fee if returned in new
condition within 90 days of shipment. Stock products qualify for free cancellation
if your order is cancelled within 24 hours of purchase. Built-to-order products
qualify for a 50% refund if returned in new condition within 90 days of shipment.
Custom products are quoted and built specifically to the requirements of the
customer, which may include completely custom product designs or private
labeled versions of standard products for OEM customers. Custom products
ordered are non-cancellable, non-returnable and non-refundable.
Mm-Tct301-3/Rev B
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